A study on multi-walled carbon nanotube reinforced Al7075 nano composites by P/M route

In this work, multilayer carbon nanotubes reinforced with Al7075 were employed to homogenise the material. Powder metallurgy and AL7075 were used to create the nanocomposite, which had polyhedral carbon nanotube reinforcement of 0.8, 1.7, and 3.3 percent by weight. Using a hydraulic press, the samples were squeezed and sintered. Furthermore, the sintered samples were dissolved by heating them to 780 degrees Celsius, then chilling and ageing them to determine whether it enhanced their qualities. The sintered joint's micro-strength has increased from 5 hV to 50 hV, representing a 66.66 percent increase in hardness, while the tensile strength has gone from 85 MPa to 145 MPa, representing a 68 percent increase in strength. Heat-treated sintered composites' microhardness rose from 45 HV to 92 HV. Heat-treated sintered composites' hardness and tensile strength rose by 18% and 25%, respectively. Porosity increases with an increasing proportion of sintered and sintered heat-treated composites reinforced, but density decreases with an increasing percentage of sintered and sintered heat-treated composites reinforced. The picture was examined using an electron scanning microscope and X-ray crystallography, which indicated the presence of polyhedral carbon nanotubes uniformly dispersed with the Al7075 matrix. According to photographs acquired with an electron transmission microscope, the entangled and continuous clusters of nanotubes increased the compounds' resistance.